package org.atfeihu.springcloud.service.impl;

import cn.hutool.core.util.IdUtil;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixCommand;
import com.netflix.hystrix.contrib.javanica.annotation.HystrixProperty;
import org.atfeihu.springcloud.service.PaymentService;
import org.springframework.stereotype.Service;
import org.springframework.web.bind.annotation.PathVariable;

import java.util.concurrent.TimeUnit;

/**
 * @author wangfeihu
 * @create 2021/9/3 9:03
 */
@Service
public class PaymentServiceImpl implements PaymentService {

    /**
     * 正常访问, 肯定ok
     * @param id
     * @return
     */
    @Override
    public String paymentInfo_ok(Integer id) {
        return "线程池: " + Thread.currentThread().getName() + "; paymentInfo_ok; id: " + id + "; \tO(∩_∩)O哈哈~";
    }

    @HystrixCommand(fallbackMethod = "paymentInfo_timeoutHandler", commandProperties = {
            @HystrixProperty(name = "execution.isolation.thread.timeoutInMilliseconds", value = "4000")
    })
    @Override
    public String paymentInfo_timeout(Integer id) {
        int timeNumber = 3;
        try { TimeUnit.SECONDS.sleep(timeNumber); }catch (Exception e) {e.printStackTrace();}
        return "线程池: " + Thread.currentThread().getName() + "; paymentInfo_timeout; id " + id + "; \t┭┮﹏┭┮; 耗时: " + timeNumber;
    }

    public String paymentInfo_timeoutHandler(@PathVariable("id") Integer id) {
        return "线程池: " + Thread.currentThread().getName() + "; 系统(8001)繁忙, 请稍后再试; id: " + id + "; o(╥﹏╥)o;";
    }

    // =======>服务熔断
    @HystrixCommand(fallbackMethod = "paymentCircuitBreaker_fallback",commandProperties = {
            @HystrixProperty(name = "circuitBreaker.enabled",value = "true"),  // 是否开启断路器
            @HystrixProperty(name = "circuitBreaker.requestVolumeThreshold",value = "10"), // 请求次数
            @HystrixProperty(name = "circuitBreaker.sleepWindowInMilliseconds",value = "10000"), // 时间范围(时间窗口期)
            @HystrixProperty(name = "circuitBreaker.errorThresholdPercentage",value = "60"), // 失败率达到多少后跳闸
    })
    public String paymentCircuitBreaker(@PathVariable("id") Integer id){
        if (id < 0){
            throw new RuntimeException("======> id 不能负数");
        }
        String serialNumber = IdUtil.simpleUUID();

        return Thread.currentThread().getName()+"\t"+"调用成功,流水号："+serialNumber;
    }
    public String paymentCircuitBreaker_fallback(@PathVariable("id") Integer id){
        return "id 不能负数，请稍候再试,(┬＿┬)/~~  id: " +id;
    }

}
